ChemPencil

• Tested by running it
• Seen in the app
• The manual says yes
• Partly, with the reason shown
• Not supported
• Not established, which is not the same as no

Select a mark for its proof. A filled mark opens our screenshot, or the manual if the check left nothing to picture. A ring opens the manual.

Drawing structures

• Yes, according to the manual: Single, double and triple drawing tools; vendor claim. Opens the cited page.Single, double and triple bondsSingle, double and triple drawing tools; vendor claim.apps.apple.com
• Yes, according to the manual. Opens the cited page.Wedge, hash and wavy bondschempencil.app
• Not establishedDative, hydrogen and quadruple bonds
• Yes, according to the manual: Left, right and center alignment; vendor claim. Opens the cited page.Choose double-bond sideLeft, right and center alignment; vendor claim.apps.apple.com
• Yes, according to the manual: Three- to eight-membered rings and benzene; vendor claim. Opens the cited page.Ring toolsThree- to eight-membered rings and benzene; vendor claim.chempencil.app
• Yes, according to the manual: Cyclohexane chair tools; vendor claim. Opens the cited page.Chair and Haworth ringsCyclohexane chair tools; vendor claim.chempencil.app
• Not establishedChain tool
• Yes, according to the manual: Templates panel inserts common molecules. Opens the cited page.Template libraryTemplates panel inserts common molecules.chempencil.app
• Yes, according to the manual: Mac personal structure templates; vendor claim. Opens the cited page.Save your own templatesMac personal structure templates; vendor claim.apps.apple.com
• Yes, according to the manual: Set and expand named groups; vendor claim. Opens the cited page.Group abbreviationsSet and expand named groups; vendor claim.chempencil.app
• Yes, according to the manual: Element editing, formal charges and isotopes; vendor claim. Opens the cited page.Charges, isotopes and atom labelsElement editing, formal charges and isotopes; vendor claim.apps.apple.com
• Not establishedRadicals and lone pairs
• Yes, according to the manual: Hover over bonds and press editing hotkeys on Mac. Opens the cited page.Keyboard drawingHover over bonds and press editing hotkeys on Mac.chempencil.app
• Not establishedLasso select and transforms
• Not establishedTilt drawings in perspective

Reactions and mechanisms

• Yes, according to the manual. Opens the cited page.Reaction arrowschempencil.app
• Yes, according to the manual: Draw curved double-barbed and fishhook arrows. Opens the cited page.Curved mechanism arrowsDraw curved double-barbed and fishhook arrows.chempencil.app
• Yes, according to the manual: RXN and RDF read/write; vendor claim. Opens the cited page.Machine-readable reactionsRXN and RDF read/write; vendor claim.chempencil.app
• Yes, according to the manual: Map Reaction numbers corresponding atoms. Opens the cited page.Atom mappingMap Reaction numbers corresponding atoms.chempencil.app
• Not establishedOrbitals and symbols

Figures and layout

• Not establishedRich text captions
• Not establishedShapes, brackets and curves
• Yes, according to the manual. Opens the cited page.Align and distributechempencil.app
• Yes, according to the manual: Windows Structure menu includes grouping; vendor claim. Opens the cited page.Group and ungroupWindows Structure menu includes grouping; vendor claim.displaycatalog.mp.microsoft.com
• Yes, according to the manual: Clean Up Structure and Auto-Orient commands. Opens the cited page.2D structure cleanupClean Up Structure and Auto-Orient commands.chempencil.app
• Not establishedJournal drawing styles
• Yes, according to the manual: Global bond and label preferences apply across documents. Opens the cited page.Reusable custom stylesGlobal bond and label preferences apply across documents.chempencil.app
• Not establishedColor control
• Not establishedColor highlighting
• Not establishedPage layout and multipage
• Not establishedImported pictures
• Yes, according to the manual: Editable reaction stoichiometry table. Opens the cited page.TLC plates and tablesEditable reaction stoichiometry table.chempencil.app

Chemistry intelligence

• Yes, according to the manual: Live valence warnings and Structure Check; vendor claim. Opens the cited page.Structure checkingLive valence warnings and Structure Check; vendor claim.apps.apple.com
• Yes, according to the manual: Computed R/S and E/Z appear in generated names. Opens the cited page.R/S and E/Z labelsComputed R/S and E/Z appear in generated names.chempencil.app
• Yes, according to the manual. Opens the cited page.Formula and masschempencil.app
• Yes, according to the manual: TPSA and Mannhold/Crippen logP. Opens the cited page.Property estimatesTPSA and Mannhold/Crippen logP.chempencil.app
• Yes, according to the manual: Common functional groups and ring families. Opens the cited page.Name to structureCommon functional groups and ring families.chempencil.app
• Yes, according to the manual: Complex fused polycycles may not be named. Opens the cited page.Structure to nameComplex fused polycycles may not be named.chempencil.app
• Yes, according to the manual: Windows 1H/13C shift summaries; vendor claim. Opens the cited page.NMR predictionWindows 1H/13C shift summaries; vendor claim.displaycatalog.mp.microsoft.com
• Yes, according to the manual: Query atoms, atom lists and SMARTS; vendor claim. Opens the cited page.R-groups and query structuresQuery atoms, atom lists and SMARTS; vendor claim.chempencil.app
• Not establishedPolymers and repeat units
• Not establishedPeptides and nucleic acids
• Not establishedImage to structure
• No: Both desktop builds explicitly lack network access. Opens the cited page.Online structure lookupBoth desktop builds explicitly lack network access.chempencil.app
• Yes, according to the manual: Rotatable viewer; Mac requires imported 3D MOL/SDF coordinates. Opens the cited page.3D model viewRotatable viewer; Mac requires imported 3D MOL/SDF coordinates.chempencil.app
• Not establishedCrystal structures

Files and exchange

• Yes, according to the manual: Mac read/write; Windows export documentation conflicts; vendor claim. Opens the cited page.CDXML import and exportMac read/write; Windows export documentation conflicts; vendor claim.apps.apple.com
• Not establishedCDX import and export
• Yes, according to the manual: MOL and SDF read/write; vendor claim. Opens the cited page.MOL and SDFMOL and SDF read/write; vendor claim.chempencil.app
• Yes, according to the manual. Opens the cited page.SMILESchempencil.app
• Yes, according to the manual: Copy standard InChI and InChIKey. Opens the cited page.InChICopy standard InChI and InChIKey.chempencil.app
• Yes, according to the manual: RXN read/write; vendor claim. Opens the cited page.RXN filesRXN read/write; vendor claim.chempencil.app
• Yes, according to the manual. Opens the cited page.SVG exportchempencil.app
• Yes, according to the manual. Opens the cited page.PDF exportchempencil.app
• Yes, according to the manual: Mac up to 600 dpi; Windows 300 dpi. Opens the cited page.High-resolution PNGMac up to 600 dpi; Windows 300 dpi.chempencil.app
• Partly: Windows copies editable structures to ChemDraw. Opens the cited page.Paste to and from ChemDrawWindows copies editable structures to ChemDraw.chempencil.app
• Not establishedEditable in Word or PowerPoint
• Not establishedWindows Office OLE

APIs and automation

• Not establishedPython API
• Not establishedJavaScript or TypeScript API
• Not establishedCommand-line tool
• Not establishedAI agent control
• Not establishedBuilt-in AI assistant

Embedding and extension

• Not establishedPlugins
• Not established: Desktop exports and clipboard documented; no supported editor embedding confirmed.Embed in your own appDesktop exports and clipboard documented; no supported editor embedding confirmed.chempencil.app